The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A235610 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A235610

Array read by antidiagonals: T(n,k) = number of possible positions in standard Connect Four play on a board of height n and width k (n>=1, k>=1).
(history; published version)

#12 by Jon E. Schoenfield at Wed Nov 30 22:28:17 EST 2016

STATUS

editing

approved

#11 by Jon E. Schoenfield at Wed Nov 30 22:28:14 EST 2016

NAME

Array read by anti-diagonalsantidiagonals: T(n,k) = number of possible positions in standard connect-4 Connect Four play on a board of height n and width k (n>=1, k>=1).

STATUS

approved

editing

#10 by N. J. A. Sloane at Tue May 19 16:08:58 EDT 2015

LINKS

John Tromp, <a href="http://homepages.cwi.nl/~tromp.github.io/c4/c4.html">John's Connect Four Playground</a>, viewed Jan 23 2014.

Discussion

Tue May 19

16:08

OEIS Server: https://oeis.org/edit/global/2429

#9 by N. J. A. Sloane at Thu Jan 23 17:58:40 EST 2014

STATUS

editing

approved

#8 by N. J. A. Sloane at Thu Jan 23 17:58:38 EST 2014

LINKS

John Tromp, <a href="http://homepages.cwi.nl/~tromp/c4/c4.html">John's Connect Four Playground, </a>, viewed Jan 23 2014.

STATUS

approved

editing

#7 by N. J. A. Sloane at Thu Jan 23 17:52:23 EST 2014

STATUS

editing

approved

#6 by N. J. A. Sloane at Thu Jan 23 17:52:20 EST 2014

EXAMPLE

The array as given on the Tromp web site.:

height

------

8: 9 13343 8424616 1104642469

7: 8 4587 1417322 135385909 14171315454

6: 7 1571 235781 15835683 1044334437 69173028785 4531985219092

5: 6 537 38310 1706255 69763700 2818972642 112829665923

4: 5 179 6000 161029 3945711 94910577 2265792710 54233186631

3: 4 58 869 12031 158911 2087325 27441956 362940958

2: 3 18 116 741 4688 29737 189648 1216721

1: 2 5 13 35 96 267 750 2118

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-: 1 2 3 4 5 6 7 <- width

STATUS

approved

editing

#5 by N. J. A. Sloane at Thu Jan 23 17:50:36 EST 2014

STATUS

editing

approved

#4 by N. J. A. Sloane at Thu Jan 23 17:50:34 EST 2014

CROSSREFS

Cf. A212693, A090224, A013582, A235611, A235612.

STATUS

approved

editing

#3 by N. J. A. Sloane at Thu Jan 23 17:49:56 EST 2014

STATUS

editing

approved